Question i7-9700K only hits 3.6GHz across all cores under 100% load

[katulen]

Hey guys.

I did some Cinebench R15 and R20 to see how my CPU was performing under load.
And i noticed that under 100% load, all 8 core's was sitting on 3.6GHz.

Isn't it suppose to look something like this (100% load) ?.

Core 1: 4.9 GHz
Core 2: 4.8 GHz
Core 3: 4.7 GHz
Core 4: 4.7 GHz
Core 5: 4.6 GHz
Core 6: 4.6 GHz
Core 7: 4.6 GHz
Core 8: 4.6 GHz

Something to do with Turbo Boost.
Or perhaps at least hit 4.6 GHz across all 8 cores when under 100% load

I am mistaken here?

Thanks in advance.

 

[rgd1101]

no, the 4.9 is when on 1 cores is active.
did you read it on intel website? https://www.intel.com/content/www/u...ology/turbo-boost/turbo-boost-technology.html

 

[katulen]

no, the 4.9 is when on 1 cores is active.

Yeah thats what i mean by the table.

Isn't it suppose to hit 4.6GHz across all the board, when all 8 cores is 100% under load ? And not 3.6GHz.

 

[rgd1101]

Yeah thats what i mean by the table.

Isn't it suppose to hit 4.6GHz across all the board, when all 8 cores is 100% under load ? And not 3.6GHz.

when it meet power and temp requirement for the turbo boost.
if you running a performance test, temp/power would be higher then it can run turbo boost

 

[katulen]

when it meet power and temp requirement for the turbo boost.
if you running a performance test, temp/power would be higher then it can run turbo boost

Max temp on the CPU was 45c.
Max voltages was 1.060v.

So i assume there should be plenty of headroom to run turbo boost ?

 

[rgd1101]

Max temp on the CPU was 45c.
Max voltages was 1.060v.

So i assume there should be plenty of headroom to run turbo boost ?

that when you running the test? and how many W?

what motherboard do you have? psu?

 

[katulen]

that when you running the test? and how many W?

what motherboard do you have? psu?

Yes, that is when i ran the test. Im using HWiNFO to monitor temps & voltages.
CPU Package Power: 59.958 W <- I assume this is what youre asking for, if not correct me please.

ASUS ROG STRIX Z390-F GAMING
CORSAIR RMx Series RM750x

 

[rgd1101]

connected both 24 and 8 pin power on the mobo?
what cooler do you have ?

 

[katulen]

connected both 24 and 8 pin power on the mobo?
what cooler do you have ?

Yessir.

And i've got NZXT Kraken X72.

What is your thought process going ?

 

[rgd1101]

does HWiNFO show max at 4.9 at all? or anything higher then 3.6?
did you make any change on the bios?

 

[katulen]

does HWiNFO show max at 4.9 at all? or anything higher then 3.6?
did you make any change on the bios?

Well, while running Cinebench's it never hit +3.6GHz, not even 1 core hit 4.9GHz.
However, when doing normal stuff, i could see in Afterburner that the cores hit 4.9GHz for a second at some point in time.
And no, i never made any changes in BIOS - But i know the company who build the system did, cause i saw XMP was enabled etc.

UPDATE - FIXED IT

On another forum someone told me to try update my BIOS.
I then did that, and noticed the current BIOS i had was 0506 and new one was 0905.

After it updated, i ran a few Cinebenchs and could now conclude that, updating BIOS actually fixed the issue, where my i7-9700K didnt wanna turbo boost.
But now it does.

Thanks alot - Much appreciated.